1
2/*
3 * Licensed Materials - Property of IBM
4 *
5 * trousers - An open source TCG Software Stack
6 *
7 * (C) Copyright International Business Machines Corp. 2004-2007
8 *
9 */
10
11
12#include <stdlib.h>
13#include <stdio.h>
14#include <string.h>
15#include <time.h>
16#include <errno.h>
17
18#include "trousers/tss.h"
19#include "trousers/trousers.h"
20#include "trousers_types.h"
21#include "spi_utils.h"
22#include "capabilities.h"
23#include "tsplog.h"
24#include "obj.h"
25
26
27#ifdef TSS_BUILD_TRANSPORT
28TSS_RESULT
29Transport_Extend(TSS_HCONTEXT tspContext,	/* in */
30		 TCPA_PCRINDEX pcrNum,	/* in */
31		 TCPA_DIGEST inDigest,	/* in */
32		 TCPA_PCRVALUE * outDigest)	/* out */
33{
34	TSS_RESULT result;
35	UINT64 offset;
36	TCS_HANDLE handlesLen = 0;
37	UINT32 decLen;
38	BYTE data[sizeof(TCPA_PCRINDEX) + sizeof(TCPA_DIGEST)], *dec;
39
40	if ((result = obj_context_transport_init(tspContext)))
41		return result;
42
43	LogDebugFn("Executing in a transport session");
44
45	offset = 0;
46	Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
47	Trspi_LoadBlob(&offset, TPM_SHA1_160_HASH_LEN, data, inDigest.digest);
48
49	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Extend, sizeof(data), data,
50						    NULL, &handlesLen, NULL, NULL, NULL, &decLen,
51						    &dec)))
52		return result;
53
54	offset = 0;
55	Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
56
57	free(dec);
58
59	return TSS_SUCCESS;
60}
61
62TSS_RESULT
63Transport_PcrRead(TSS_HCONTEXT tspContext,	/* in */
64		  TCPA_PCRINDEX pcrNum,	/* in */
65		  TCPA_PCRVALUE * outDigest)	/* out */
66{
67	TSS_RESULT result;
68	UINT64 offset;
69	TCS_HANDLE handlesLen = 0;
70	UINT32 decLen;
71	BYTE data[sizeof(TCPA_PCRINDEX)], *dec;
72
73	if ((result = obj_context_transport_init(tspContext)))
74		return result;
75
76	LogDebugFn("Executing in a transport session");
77
78	offset = 0;
79	Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
80
81	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_PcrRead, sizeof(data),
82						    data, NULL, &handlesLen, NULL, NULL, NULL,
83						    &decLen, &dec)))
84		return result;
85
86	offset = 0;
87	Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
88
89	free(dec);
90
91	return TSS_SUCCESS;
92}
93
94
95TSS_RESULT
96Transport_PcrReset(TSS_HCONTEXT tspContext,	/* in */
97		   UINT32 pcrDataSizeIn,	/* in */
98		   BYTE * pcrDataIn)		/* in */
99{
100	TSS_RESULT result;
101	TCS_HANDLE handlesLen = 0;
102
103	if ((result = obj_context_transport_init(tspContext)))
104		return result;
105
106	LogDebugFn("Executing in a transport session");
107
108	return obj_context_transport_execute(tspContext, TPM_ORD_PCR_Reset, pcrDataSizeIn,
109					     pcrDataIn, NULL, &handlesLen, NULL, NULL, NULL, NULL,
110					     NULL);
111}
112#endif
113